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This is a very strange phenomenon. My app uses the Android Google Drive SDK to store two data files for every user. These files are in the app folder. To get a connection to the Google service, I use :
PlusOptions plusOptions = new Plus.PlusOptions.Builder()
.addActivityTypes("http://schemas.google.com/AddActivity").build();
mGoogleApi = new GoogleApiClient.Builder(this).addApi(Plus.API, plusOptions).addScope(Plus.SCOPE_PLUS_LOGIN)
.addScope(Plus.SCOPE_PLUS_PROFILE).addApi(Drive.API).addScope(Drive.SCOPE_FILE)
.addScope(Drive.SCOPE_APPFOLDER).addConnectionCallbacks(this).addOnConnectionFailedListener(this)
.build();
I am able to create these files and write them. But from time to time, the two files disappear, and their content is lost. The logcat stream contains messages like these:
05-16 10:15:18.316: W/GLSUser(829): [apk][apk] Permission for debut.kholle to access oauth2:https://www.googleapis.com/auth/drive.file https://www.googleapis.com/auth/drive.appdata https://www.googleapis.com/auth/plus.login https://www.googleapis.com/auth/plus.me will be managed remotely.
05-16 10:15:18.416: I/qtaguid(14877): Failed write_ctrl(u 56) res=-1 errno=22
05-16 10:15:18.416: I/qtaguid(14877): Untagging socket 56 failed errno=-22
05-16 10:15:18.416: W/NetworkManagementSocketTagger(14877): untagSocket(56) failed with errno -22
05-16 10:15:18.416: I/imp(14877): I/O exception (org.apache.http.NoHttpResponseException) caught when processing request: The target server failed to respond
05-16 10:15:18.416: I/imp(14877): Retrying request
05-16 10:15:18.436: W/GLSUser(829): [apk][apk] Permission for debut.kholle to access oauth2:https://www.googleapis.com/auth/drive.file https://www.googleapis.com/auth/drive.appdata https://www.googleapis.com/auth/plus.login https://www.googleapis.com/auth/plus.me will be managed remotely.
05-16 10:15:18.516: W/GLSUser(829): GoogleAccountDataService.getToken()
05-16 10:15:18.546: I/qtaguid(21108): Failed write_ctrl(u 85) res=-1 errno=22
05-16 10:15:18.546: I/qtaguid(21108): Untagging socket 85 failed errno=-22
05-16 10:15:18.546: W/NetworkManagementSocketTagger(21108): untagSocket(85) failed with errno -22
05-16 10:15:18.546: I/imp(21108): I/O exception (org.apache.http.NoHttpResponseException) caught when processing request: The target server failed to respond
05-16 10:15:18.546: I/imp(21108): Retrying request
05-16 10:15:19.576: E/SyncSchedulerImpl(14877): Ignoring sync request: rate limited (on connection limit)
Edit:
Here is my code to read a file containing application data. This code is included in the activity onCreate procedure:
monGoogleApiLire = new GoogleApiClient.Builder(this).addApi(Drive.API).addScope(Drive.SCOPE_FILE)
.addScope(Drive.SCOPE_APPFOLDER).addConnectionCallbacks(new GoogleApiClient.ConnectionCallbacks() {
@Override
public void onConnected(Bundle connectionHint) {
Filter titreFilter = Filters.eq(SearchableField.TITLE, NOM_FICHIER_PLANNING);
Query query = new Query.Builder().addFilter(titreFilter).build();
Drive.DriveApi.getAppFolder(monGoogleApiLire).queryChildren(monGoogleApiLire, query)
.setResultCallback(new ResultCallback<MetadataBufferResult>() {
@Override
public void onResult(MetadataBufferResult result) {
if (!result.getStatus().isSuccess()) {
// showMessage("Error while trying to create the file");
return;
}
MetadataBuffer meta = result.getMetadataBuffer();
if (meta.getCount() != 0) {
int nb = meta.getCount();
DriveId idc = null;
for (int i = 0; i < nb; i++) {
idc = meta.get(i).getDriveId();
}
DriveFile fichier = Drive.DriveApi.getFile(monGoogleApiLire, idc);
fichier.openContents(monGoogleApiLire, DriveFile.MODE_READ_ONLY, null)
.setResultCallback(new ResultCallback<ContentsResult>() {
@Override
public void onResult(ContentsResult result) {
if (!result.getStatus().isSuccess()) {
// display an error saying file can't be opened
return;
}
// Contents object contains pointers
// to the actual byte stream
Contents contents = result.getContents();
BufferedReader reader = new BufferedReader(
new InputStreamReader(contents.getInputStream()));
StringBuilder builder = new StringBuilder();
String line;
try {
while ((line = reader.readLine()) != null) {
builder.append(line);
}
String contentsAsString = builder.toString();
reader.close();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
contents.close();
// fichier.commitAndCloseContents(gapi, contents);
}
});
} else {
monPlanning = new ArrayList<DonneesPlanning>();
afficherPlanning();
if (monPlanning != null && mesCours != null && mesLieux != null) {
ActiviteKholle.this.setProgressBarIndeterminateVisibility(false);
monGoogleApiLire.disconnect();
}
// monGoogleApiLire.disconnect();
}
meta.close();
}
});
titreFilter = Filters.eq(SearchableField.TITLE, NOM_FICHIER_COURS);
query = new Query.Builder().addFilter(titreFilter).build();
Drive.DriveApi.getAppFolder(monGoogleApiLire).queryChildren(monGoogleApiLire, query)
.setResultCallback(new ResultCallback<MetadataBufferResult>() {
@Override
public void onResult(MetadataBufferResult result) {
if (!result.getStatus().isSuccess()) {
// showMessage("Error while trying to create the file");
return;
}
MetadataBuffer meta = result.getMetadataBuffer();
if (meta.getCount() != 0) {
int nb = meta.getCount();
DriveId idc = null;
for (int i = 0; i < nb; i++) {
idc = meta.get(i).getDriveId();
}
DriveFile fichier = Drive.DriveApi.getFile(monGoogleApiLire, idc);
fichier.openContents(monGoogleApiLire, DriveFile.MODE_READ_ONLY, null)
.setResultCallback(new ResultCallback<ContentsResult>() {
@Override
public void onResult(ContentsResult result) {
if (!result.getStatus().isSuccess()) {
// display an error saying file can't be opened
return;
}
// Contents object contains pointers
// to the actual byte stream
Contents contents = result.getContents();
BufferedReader reader = new BufferedReader(
new InputStreamReader(contents.getInputStream()));
StringBuilder builder = new StringBuilder();
String line;
try {
while ((line = reader.readLine()) != null) {
builder.append(line);
}
String contentsAsString = builder.toString();
reader.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
contents.close();
// fichier.commitAndCloseContents(gapi, contents);
}
});
} else {
mesCours = new ArrayList<DonneesCours>();
if (monPlanning != null && mesCours != null && mesLieux != null) {
ActiviteKholle.this.setProgressBarIndeterminateVisibility(false);
monGoogleApiLire.disconnect();
}
}
meta.close();
}
});
titreFilter = Filters.eq(SearchableField.TITLE, NOM_FICHIER_LIEUX);
query = new Query.Builder().addFilter(titreFilter).build();
Drive.DriveApi.getAppFolder(monGoogleApiLire).queryChildren(monGoogleApiLire, query)
.setResultCallback(new ResultCallback<MetadataBufferResult>() {
@Override
public void onResult(MetadataBufferResult result) {
if (!result.getStatus().isSuccess()) {
// showMessage("Error while trying to create the file");
return;
}
MetadataBuffer meta = result.getMetadataBuffer();
if (meta.getCount() != 0) {
int nb = meta.getCount();
DriveId idc = null;
for (int i = 0; i < nb; i++) {
idc = meta.get(i).getDriveId();
}
DriveFile fichier = Drive.DriveApi.getFile(monGoogleApiLire, idc);
fichier.openContents(monGoogleApiLire, DriveFile.MODE_READ_ONLY, null)
.setResultCallback(new ResultCallback<ContentsResult>() {
@Override
public void onResult(ContentsResult result) {
if (!result.getStatus().isSuccess()) {
// display an error saying file can't be opened
return;
}
// Contents object contains pointers
// to the actual byte stream
Contents contents = result.getContents();
BufferedReader reader = new BufferedReader(
new InputStreamReader(contents.getInputStream()));
StringBuilder builder = new StringBuilder();
String line;
try {
while ((line = reader.readLine()) != null) {
builder.append(line);
}
String contentsAsString = builder.toString();
reader.close();
if (monPlanning != null && mesCours != null
&& mesLieux != null) {
ActiviteKholle.this
.setProgressBarIndeterminateVisibility(false);
monGoogleApiLire.disconnect();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
contents.close();
// fichier.commitAndCloseContents(gapi, contents);
}
});
} else {
mesLieux = new ArrayList<DonneesLieu>();
if (monPlanning != null && mesCours != null && mesLieux != null) {
ActiviteKholle.this.setProgressBarIndeterminateVisibility(false);
monGoogleApiLire.disconnect();
}
}
meta.close();
}
});
}
@Override
public void onConnectionSuspended(int cause) {
// TODO Auto-generated method stub
}
}).addOnConnectionFailedListener(new GoogleApiClient.OnConnectionFailedListener() {
@Override
public void onConnectionFailed(ConnectionResult result) {
// TODO Auto-generated method stub
}
}).build();
monGoogleApiLire.connect();
Is there an explanation for this ?
P.S. : After a lot of trials and test, I am now sure that the field "monGoogleApi" is connected when I test the file existence. When I use "queryChildren" to search for the file by name and mime type, on the line of code :
if (meta.getCount() != 0) {
...
}
During 15 minutes, meta.getCount is equal to 1, after 15 minutes, meta.getCount equals 0.
483
Have you check the connection status of "monGoogleApi" ?
This connection may have a session timeout.
https://developer.android.com/reference/com/google/android/gms/common/api/GoogleApiClient.html#isConnected()
114
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